Grain boundary resistance of fast lithium ion conductors: Comparison between a lithium-ion conductive Li–Al–Ti–P–O-type glass ceramic and a Li1.5Al0.5Ge1.5P3O12 ceramic

Mariappan, C.R.; Gellert, Michael; Yada, Chihiro; Rosciano, Fabio; Roling, Bernhard

doi:10.1016/j.elecom.2011.10.022

Cited by 118 publications

(67 citation statements)

References 21 publications

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“…To fulfil high-performance solid state batteries, highly conducting electrolytes are key materials. So far, it has been reported many different types of solid electrolytes, including perovskite-type titanates [2,3], NASICON-type phosphates [4,5], LISICON-type sulfides [6,7] and their glass-ceramic analogs [8], and the young while promising Li 7 La 3 Zr 2 O 12 (LLZO) garnets. Compared to others, the cubic LLZO is relatively stable in air and shows the ionic conductivity above 10 -4 S cm -1 at room temperature, good stability against lithium metal electrode and electrochemical potential window as large as 6 V [9], which makes it promising candidate for development of solid state lithium ion batteries.…”

Section: Introductionmentioning

confidence: 99%

W-Doped Li7La3Zr2O12 Ceramic Electrolytes for Solid State Li-ion Batteries

Wang

Cao

et al. 2015

Electrochimica Acta

165

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Section: Introductionmentioning

confidence: 99%

W-Doped Li7La3Zr2O12 Ceramic Electrolytes for Solid State Li-ion Batteries

Wang

Cao

et al. 2015

Electrochimica Acta

165

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“…Furthermore, LAGP compounds are also chemically stable when in contact with metallic lithium. Because of these characteristics, LAGP compounds are of technological interest, since they are good candidates to be used as solid-electrolytes in lithium ion batteries [1][2][3] , or as membranes in electrochemical sensors 4 . Since electrical and mechanical properties are dependent on the microstructure 5 , which may be tailored by controlled crystallization, knowledge about the crystallization kinetics of this family of glasses is of fundamental interest.…”

Section: Introductionmentioning

confidence: 99%

Determination of crystallization kinetics parameters of a Li1.5Al0.5Ge1.5(PO4)3 (LAGP) glass by differential scanning calorimetry

2013

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Crystallization kinetics parameters of a stoichiometric glass with the composition Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 were investigated by subjecting parallelepipedonal samples (3 × 3 × 1.5 mm) to heat treatment in a differential scanning calorimeter at different heating rates (3, 5, 8 and 10 °C/min). The data were analyzed using Ligero's and Kissinger's methods to determine the activation energy (E) of crystallization, which yielded, respectively, E = 415 ± 37 kJ/mol and 378 ± 19 kJ/mol. Ligero's method was also employed to calculate the Avrami coefficient (n), which was found to be n = 3.0. A second set of samples were heat-treated in a tubular furnace at temperatures above the glass transition temperature, T g , to induce crystallization. The X-ray diffraction analysis of these samples indicated the presence of LiGe 2 (PO 4 ) 3 which displays a NASICON-type structure. An analysis by optical microscopy revealed the presence of spheric crystals located primarily in the volume, in agreement with the crystallization mechanism predicted by the Avrami coefficient.

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“…2g and h represents the response of D C with γ C =0.388 only, since a perfectly ideal capacitance in parallel has no contribution to the real admittance. The parallel network of Q and C, in the spirit of CK1 model, has been employed for a better description of the experimental data [38][39][40][41]. Frequency dispersion was arbitrarily adjusted and was given little physical significance.…”

Section: Resultsmentioning

confidence: 99%

A comprehensive treatment of universal dispersive frequency responses in solid electrolytes by immittance spectroscopy: low temperature AgI case

Moon

Cho

Nguyen

et al. 2015

J Solid State Electrochem

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Motivated by the recent work on β -alumina polycrystalline ceramics, we revisit the frequency dispersion behavior of AgI. Series of admittance and capacitance Bode plots at different temperatures revealed the presence of well-defined parallel capacitance effects and powerlaw frequency dependencies. Non-trivial bulk dispersion is thus successfully described by the bulk conductance with activation energy of 0.262 eV in parallel connection to several capacitive effects: (i) a mobile-charge contribution, universally observed in many solid electrolytes, approximated by a Cole-Davidson model with C ∼ = 28, γ C ∼ =0.388, and (τ C ) −1 thermally activated by 0.237 eV, (ii) a dipolar and vibratory contribution represented by another Cole-Davidson model of the dielectric strength of D ∼ = 9.0 with γ D ∼ =0.110, τ D ∼ =0.003 s, corresponding to Nearly-Constant-Loss behavior, and (iii) high frequency limit capacitance corresponding to the dielectric constant S ∼ =6.4. Electrode effects are described by an ideal Warburg response and the coefficient activated by 0.165 eV, which is connected in parallel to the bulk capacitive elements (i) to (iii). The modeling allows a simulation of ac behavior of AgI as a function of temperature as well as frequencies, addressing all of the universally observed dispersive responses.

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Grain boundary resistance of fast lithium ion conductors: Comparison between a lithium-ion conductive Li–Al–Ti–P–O-type glass ceramic and a Li1.5Al0.5Ge1.5P3O12 ceramic

Cited by 118 publications

References 21 publications

W-Doped Li7La3Zr2O12 Ceramic Electrolytes for Solid State Li-ion Batteries

W-Doped Li7La3Zr2O12 Ceramic Electrolytes for Solid State Li-ion Batteries

Determination of crystallization kinetics parameters of a Li1.5Al0.5Ge1.5(PO4)3 (LAGP) glass by differential scanning calorimetry

A comprehensive treatment of universal dispersive frequency responses in solid electrolytes by immittance spectroscopy: low temperature AgI case

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